Finding the Fourth Proportional to 2,510.55, 3,762.78 and 2,215.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.55 : 3,762.78 = 2,215.30 : x
2. Step 2: Convert to fraction form
   2,510.55/3,762.78 = 2,215.30/x
3. Step 3: Cross multiply
   2,510.55x = 3,762.78 × 2,215.30
4. Step 4: Simplify right side
   2,510.55x = 8,335,686.53
5. Step 5: Solve for x
   x = 8,335,686.53/2,510.55
6. Step 6: Final answer
   x = 3,320.26